It turns out the CMUX protocol implementation is buggy over USB (I seem to recall it working fine over UART). I switched the modem from CMUX mode to plain data mode and the problems disappeared. _modem->set_mode(modem_mode::DATA_MODE) I additionally had to raise the buffer size on the DTE to 2048 B ...

Hi! I am experiencing a packet loss of nearly 50% when transmitting larger packets (e.g 1400B) using a SIM7070G GSM module connected via USB OTG to ESP32S3. Smaller packets (e.g. 1000B) are OK. The terminal is lousy with errors from CDC-ACM and other USB subsystems. The exact same GSM module has a p...

Wonderful, thank you!

I'm trying to read the detailed docs on esp-protocols, specifically esp_modem. There are several links to "full HTML documentation" found in https://github.com/espressif/esp-protocols or https://github.com/espressif/esp-protocols/blob/master/components/esp_modem/README.md which point to this address...

Hi! I have to set up each ESP32 with some unique NVS data during manufacturing (serial number, private keys, etc). Flash and NVS encryption are enabled. I quite love the Flash encryption feature where the key gets generated in device and the marked partitions are encrypted in-place. I don't have to ...

OK, thank you very much. I suspected something like this. Writing an app which is able to update the bootloader is quite a bit of work and doesn't really justify saving an 8€ board - I'll just head over to TME and order a few spares. Well, I suppose accidents like these are likely when playing aroun...

Sure, I it's OTP and I can't change the fuse anymore. But the board is not bricked - it runs the bootloader and app just fine, and I can update the app using OTA. And the Flash encryption is in Development mode, so not a total loss. What I'm looking to do is to update the bootloader (e.g. to further...

I recently started looking into the trinity of Flash encryption, NVS encryption and Secure Boot on a ESP32-WROOM-32E module, ESP-IDF v4.3, idf.py, Linux. First I tackled Flash encryption. As I enabled Flash encryption (Development mode), I simultaneously disabled the UART download (SECURE_DISABLE_RO...

The search functionality of this site (esp32.com) is broken. E.g. searching for "nvs encryption" in Google Chrome results in HTTP ERROR 500. Could somebody please have a look at it? I'd argue that it's a rather critical function of a technical support site

Looks like the certificate parsing fails. Most likely the certificate you used is not in correct format.